`purchase` module is not included in the source code but referenced in the code

[donenoyes]

Describe the Bug:

In ModuleDependency.kt, there is const val PURCHASE = ":app:purchase"

But there is not purchase module in the source code.

This purchase module is references in various places example, AutoPurchaseWorker.kt

And therefore throws error while compiling.

Expected Behavior:

Please include the purchase module in the GitHub source code and guide further.

[KaustubhPatange]

You need to read this compilation guide.